A functional defect detection device for piezoelectric fingerprint modules

Abstract

The utility model discloses a piezoelectric fingerprint module's function defect detection device, include: piezoelectric fingerprint module, fixture base and controller, piezoelectric fingerprint module includes module body and installs piezoelectric area, thermistor, heating resistance, connector female seat on module body, the upper surface of fixture base is equipped with a plurality of heating steel sheet and a plurality of connector male seat, heating steel sheet and piezoelectric area's position corresponds. The utility model provides a piezoelectric fingerprint module's function defect detection device, through loading manipulator can catch a plurality of piezoelectric fingerprint module to fixture base, will a plurality of piezoelectric fingerprint module order arrangement on fixture base, and each heating steel piece corresponds the piezoelectric area of one piezoelectric fingerprint module to be detected, thereby can carry out detection to a plurality of piezoelectric fingerprint module simultaneously, and the unqualified product is sorted by sorting manipulator, and the test work of piezoelectric fingerprint module is efficiently completed.

Description

Technical Field

[0001] This utility model relates to the field of piezoelectric fingerprint module testing technology, and in particular to a device for detecting functional defects in piezoelectric fingerprint modules. Background Technology

[0002] With the rapid development of technology, biometric technology has been widely applied in many fields. Among them, piezoelectric fingerprint modules, with their high precision, fast recognition, and good stability, have become one of the key technologies for identity verification and security protection. In consumer electronics products such as smartphones, tablets, and laptops, piezoelectric fingerprint modules enable convenient and fast unlocking, improving the user experience. In the financial payment field, they provide a secure and reliable identity authentication method for mobile payments, ensuring transaction security. In security fields such as access control systems and attendance equipment, piezoelectric fingerprint modules effectively identify personnel, enhancing the security and management efficiency of venues.

[0003] In extremely cold environments, ordinary piezoelectric materials are extremely sensitive to ambient temperature, resulting in a significant decrease in sensitivity. Therefore, a temperature-controlled component needs to be built into the ordinary module to ensure that the ordinary piezoelectric module can work normally in extreme environments. When producing such products, in addition to the normal group testing, an additional special device is needed to perform functional testing on this built-in temperature-controlled component to ensure the quality of the shipped products. In traditional production, fingerprint modules are tested one by one, which is inefficient and makes it difficult to complete the testing of fingerprint modules efficiently. Utility Model Content

[0004] Based on this, it is necessary to provide a functional defect detection device for piezoelectric fingerprint modules to address the above-mentioned technical problems. By arranging multiple piezoelectric fingerprint modules in an orderly manner on a fixture base, with each heated steel sheet corresponding to the piezoelectric area of ​​a piezoelectric fingerprint module to be tested, multiple piezoelectric fingerprint modules can be tested simultaneously. Defective products are sorted by a sorting robot, thus efficiently completing the testing of piezoelectric fingerprint modules.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A functional defect detection device for a piezoelectric fingerprint module, comprising:

[0007] The piezoelectric fingerprint module includes a fixture base and a controller. The piezoelectric fingerprint module includes a module body and a piezoelectric region, a thermistor, a heating resistor, and a connector female mounted on the module body. The upper surface of the fixture base is equipped with multiple heating steel plates and multiple connector males. The heating steel plates correspond to the positions of the piezoelectric region, and the connector males correspond to the positions of the connector females. The controller is used to control the heating of the heating steel plates and collect the temperature of the thermistor.

[0008] The system includes a conveying component, a loading robot, and a sorting robot. The loading robot and the sorting robot are respectively installed at the left and right ends of the rear side of the conveying component. The loading robot is used to place the piezoelectric fingerprint module in the fixture base for testing, and the sorting robot is used to remove the unqualified piezoelectric fingerprint module.

[0009] Furthermore, the piezoelectric fingerprint module is mounted on the fixture base, and there are sixteen of them.

[0010] Furthermore, the sixteen piezoelectric fingerprint modules are divided into four groups and set at the four corners of the fixture base.

[0011] Furthermore, the piezoelectric fingerprint module has an L-shaped structure, and each group of piezoelectric fingerprint modules is arranged diagonally.

[0012] Furthermore, the controller includes a temperature acquisition module and a heating control module, the heating control module being electrically connected to the heating steel sheet, and the temperature acquisition module being electrically connected to a thermistor.

[0013] Furthermore, the conveying assembly is equipped with an incoming material tray and a defective material tray.

[0014] Furthermore, the conveying assembly includes a support frame, with two side plates fixedly connected to the front and rear sides of the upper surface of the support frame. A left roller and a right roller are rotatably connected between the two side plates via bearings. A conveyor belt is installed between the left roller and the right roller. A motor is fixedly connected to the front of the side plates, and the output end of the motor is fixedly connected to the left roller.

[0015] Furthermore, support legs are fixedly connected to the four corners of the lower surface of the bracket, and anti-slip pads are fixedly connected to the bottom of the support legs. The anti-slip pads are made of rubber.

[0016] Furthermore, there are two conveyor belts, which are installed in parallel on the front and rear sides of the left and right rollers.

[0017] Furthermore, the incoming material tray and the defective product tray are respectively set on two conveyor belts.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The piezoelectric fingerprint module functional defect detection device provided by this utility model can use a loading robot to grab multiple piezoelectric fingerprint modules into a fixture base, and make the connector female of the piezoelectric fingerprint module connect with the connector male on the fixture base. At the same time, the piezoelectric area is located at the heated steel plate, so that multiple piezoelectric fingerprint modules are arranged in an orderly manner on the fixture base. Each heated steel plate corresponds to the piezoelectric area of ​​a piezoelectric fingerprint module to be tested, thus enabling the simultaneous testing of multiple piezoelectric fingerprint modules. Defective products are sorted by a sorting robot, which efficiently completes the testing of piezoelectric fingerprint modules. Attached Figure Description

[0020] Figure 1 A three-dimensional structural schematic diagram of the functional defect detection device for the piezoelectric fingerprint module provided by this utility model;

[0021] Figure 2 A front view structural schematic diagram of the functional defect detection device for the piezoelectric fingerprint module provided by this utility model;

[0022] Figure 3 A schematic diagram of the piezoelectric fingerprint module for the functional defect detection device of the piezoelectric fingerprint module provided by this utility model;

[0023] Figure 4 A schematic diagram of the fixture base for the functional defect detection device of the piezoelectric fingerprint module provided by this utility model.

[0024] The markings in the diagram are explained as follows:

[0025] 1. Piezoelectric fingerprint module; 2. Fixture base; 3. Controller; 4. Module body; 5. Piezoelectric area; 6. Thermistor; 7. Heating resistor; 8. Connector female socket; 9. Heating steel sheet; 10. Connector male socket; 11. Conveying assembly; 12. Loading robot; 13. Sorting robot; 14. Incoming material tray; 15. Defective product tray; 1101. Bracket; 1102. Side plate; 1103. Left roller; 1104. Right roller; 1106. Conveyor belt; 1107. Motor; 1108. Support leg; 1109. Anti-slip mat. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0027] As described in the background section, existing piezoelectric fingerprint modules are tested individually, which results in low testing efficiency and makes it difficult to efficiently complete the fingerprint module testing work.

[0028] To solve this technical problem, this utility model provides a functional defect detection device for piezoelectric fingerprint modules. By arranging multiple piezoelectric fingerprint modules 1 in an orderly manner on a fixture base 2, each heated steel sheet 9 corresponds to a piezoelectric region 5 of a piezoelectric fingerprint module 1 to be tested, multiple piezoelectric fingerprint modules 1 can be tested simultaneously. Defective products are sorted by a sorting robot 13, efficiently completing the testing of the piezoelectric fingerprint modules 1.

[0029] For details, please refer to Figure 1-4 The functional defect detection device for piezoelectric fingerprint modules specifically includes:

[0030] The piezoelectric fingerprint module 1, the fixture base 2, and the controller 3 are provided. The piezoelectric fingerprint module 1 includes a module body 4 and a piezoelectric region 5, a thermistor 6, a heating resistor 7, and a connector female 8 installed on the module body 4. The upper surface of the fixture base 2 is equipped with multiple heating steel plates 9 and multiple connector male 10. The heating steel plates 9 correspond to the positions of the piezoelectric region 5, and the connector male 10 corresponds to the positions of the connector female 8. The controller 3 is used to control the heating of the heating steel plates 9 and collect the temperature of the thermistor 6.

[0031] The conveying component 11, the loading robot 12, and the sorting robot 13 are respectively installed on the left and right ends of the rear side of the conveying component 11. The loading robot 12 is used to place the piezoelectric fingerprint module 1 in the fixture base 2 for testing, and the sorting robot 13 is used to remove the unqualified piezoelectric fingerprint module 1.

[0032] The piezoelectric fingerprint module functional defect detection device provided by this utility model can use a loading robot 12 to grab multiple piezoelectric fingerprint modules 1 onto a fixture base 2, and make the connector female 8 of the piezoelectric fingerprint module 1 connect with the connector male 10 on the fixture base 2. At the same time, the piezoelectric area 5 is located at the heating steel plate 9, so that multiple piezoelectric fingerprint modules 1 are arranged in an orderly manner on the fixture base 2. Each heating steel plate 9 corresponds to the piezoelectric area 5 of a piezoelectric fingerprint module 1 to be tested, thereby enabling the simultaneous testing of multiple piezoelectric fingerprint modules 1. Defective products are sorted by a sorting robot 13, efficiently completing the testing of the piezoelectric fingerprint module 1.

[0033] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0034] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] Example 1

[0037] Please refer to Figure 1-4 A functional defect detection device for a piezoelectric fingerprint module is used to specifically check the functional defects of a piezoelectric fingerprint module 1 product with a built-in constant temperature component. It includes a piezoelectric fingerprint module 1, a fixture base 2, and a controller 3. The piezoelectric fingerprint module 1 includes a module body 4 and a piezoelectric region 5, a thermistor 6, a heating resistor 7, and a connector female 8 installed on the module body 4. Multiple heating steel plates 9 and multiple connector male 10 are installed on the upper surface of the fixture base 2. The heating steel plates 9 correspond to the positions of the piezoelectric region 5, and the connector male 10 corresponds to the positions of the connector female 8. The controller 3 is used to control the heating of the heating steel plates 9 and collect the temperature of the thermistor 6.

[0038] The conveying component 11, the loading robot 12, and the sorting robot 13 are respectively installed on the left and right ends of the rear side of the conveying component 11. The loading robot 12 is used to place the piezoelectric fingerprint module 1 in the fixture base 2 for testing, and the sorting robot 13 is used to remove the unqualified piezoelectric fingerprint module 1.

[0039] The piezoelectric fingerprint module functional defect detection device provided in this embodiment can use a loading robot 12 to grab multiple piezoelectric fingerprint modules 1 and place them into a fixture base 2. The female connector 8 of the piezoelectric fingerprint module 1 is then connected to the male connector 10 on the fixture base 2. At the same time, the piezoelectric area 5 is located at the heating steel plate 9, so that multiple piezoelectric fingerprint modules 1 are arranged in an orderly manner on the fixture base 2. Each heating steel plate 9 corresponds to the piezoelectric area 5 of a piezoelectric fingerprint module 1 to be tested, thus enabling the simultaneous testing of multiple piezoelectric fingerprint modules 1. Defective products are sorted by a sorting robot 13, efficiently completing the testing of the piezoelectric fingerprint modules 1.

[0040] Example 2

[0041] The functional defect detection device for the piezoelectric fingerprint module provided in Embodiment 1 is further optimized, specifically, as follows: Figure 3 and Figure 3As shown, sixteen piezoelectric fingerprint modules 1 are mounted on the fixture base 2; the sixteen piezoelectric fingerprint modules 1 are divided into four groups and set at the four corners of the fixture base 2; the piezoelectric fingerprint modules 1 have an L-shaped structure, and each group of piezoelectric fingerprint modules 1 is set diagonally; through the above structural design, multiple piezoelectric fingerprint modules 1 are arranged in an orderly manner on the fixture base 2, and each heating steel plate 9 corresponds to the piezoelectric area 5 of a piezoelectric fingerprint module 1 to be tested.

[0042] Example 3

[0043] The functional defect detection device for the piezoelectric fingerprint module provided in Embodiment 1 or 2 is further optimized, such as... Figure 1 As shown, the controller 3 includes a temperature acquisition module and a heating control module. The heating control module is electrically connected to the heating steel sheet 9, and the temperature acquisition module is electrically connected to the thermistor 6. The conveying assembly 11 is equipped with an incoming material tray 14 and a defective product tray 15. The products in the incoming material tray 14 conveyed by the conveying assembly 11 are first picked up by the loading robot 12 and placed into the fixture base 2. The defective products are sorted into the defective product tray 15 by the subsequent sorting robot 13.

[0044] Example 4

[0045] The functional defect detection device for the piezoelectric fingerprint module provided in the above embodiments is further optimized, such as... Figure 1 and Figure 2 As shown, the conveying assembly 11 includes a bracket 1101. Two side plates 1102 are fixedly connected to the front and rear sides of the upper surface of the bracket 1101. A left roller 1103 and a right roller 1104 are rotatably connected between the two side plates 1102 via bearings. A conveyor belt 1106 is installed between the left roller 1103 and the right roller 1104. A motor 1107 is fixedly connected to the front of the side plate 1102. The output end of the motor 1107 is fixedly connected to the left roller 1103. Support legs 1108 are fixedly connected to the four corners of the lower surface of the bracket 1101. Anti-slip pads 1109 are fixedly connected to the bottom of the support legs 1108. The anti-slip pads 1109 are made of rubber.

[0046] There are two conveyor belts 1106, which are installed in parallel on the front and rear sides of the left roller 1103 and the right roller 1104; the incoming material tray 14 and the defective material tray 15 are respectively set on the two conveyor belts 1106.

[0047] In use, the incoming material tray 14 and the defective product tray 15 are placed on two conveyor belts 1106. Then, the motor 1107 drives the left roller 1103, the right roller 1104 and the two conveyor belts 1106 to rotate. At this time, the incoming material tray 14 on the conveyor belt 1106 moves to the loading robot 12. The loading robot 12 grabs the product and places it on the fixture base 2 for inspection. Then, the sorting robot 13 sorts the defective products into the defective product tray 15. Then, the conveyor belt 1106 continues to transport the product for the next step of processing.

[0048] The usage process of the piezoelectric fingerprint module functional defect detection device provided by this utility model is as follows:

[0049] By setting up a fixture base 2 with heated steel plates 9, a controller 3, a conveying assembly 11, a loading robot 12, and a sorting robot 13, the products on the receiving tray 14 conveyed by the conveying assembly 11 are first picked up by the loading robot 12 and placed into the fixture base 2. Then, the heating control module of the controller 3 drives the heating steel plates 9 to heat up, and collects and analyzes the temperature data next to the heating steel plates 9 on the fixture base 2 to calculate the temperature of the heating steel plates 9, forming a feedback loop to keep the temperature of the heating steel plates 9 constant at around 35℃±0.1℃. Then, the temperature acquisition module on the controller 3 acquires the temperature value of the thermistor 6 on the piezoelectric fingerprint module 1, analyzes and calculates whether the temperature of the thermistor 6 is within 35℃±1℃. If it is not within this range, the piezoelectric fingerprint module 1 is marked as a defective product, and the subsequent sorting robot 13 sorts the product into the defective product tray 15. Thus, through the above-mentioned functional defect detection device, the detection of the thermistor 6 of the heating part of the piezoelectric fingerprint module 1 with PID temperature compensation function is completed, and the defective products are screened out.

[0050] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0051] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A device for detecting functional defects in a piezoelectric fingerprint module, characterized in that, It includes: The piezoelectric fingerprint module (1), the fixture base (2), and the controller (3) are provided. The piezoelectric fingerprint module (1) includes a module body (4) and a piezoelectric region (5), a thermistor (6), a heating resistor (7), and a connector female (8) installed on the module body (4). The upper surface of the fixture base (2) is equipped with multiple heating steel plates (9) and multiple connector males (10). The heating steel plates (9) correspond to the positions of the piezoelectric region (5), and the connector males (10) correspond to the positions of the connector females (8). The controller (3) is used to control the heating of the heating steel plates (9) and collect the temperature of the thermistor (6). The conveying assembly (11), the loading robot (12), and the sorting robot (13) are respectively installed on the left and right ends of the rear side of the conveying assembly (11). The loading robot (12) is used to place the piezoelectric fingerprint module (1) in the fixture base (2) for testing. The sorting robot (13) is used to remove the unqualified piezoelectric fingerprint module (1).

2. The functional defect detection device for a piezoelectric fingerprint module according to claim 1, characterized in that, The piezoelectric fingerprint module (1) is installed on the fixture base (2) and there are sixteen of them.

3. The functional defect detection device for a piezoelectric fingerprint module according to claim 2, characterized in that, The sixteen piezoelectric fingerprint modules (1) are divided into four groups and set at the four corners of the fixture base (2).

4. The functional defect detection device for a piezoelectric fingerprint module according to claim 3, characterized in that, The piezoelectric fingerprint module (1) has an L-shaped structure, and each group of piezoelectric fingerprint modules (1) is arranged diagonally.

5. The functional defect detection device for a piezoelectric fingerprint module according to claim 4, characterized in that, The controller (3) includes a temperature acquisition module and a heating control module. The heating control module is electrically connected to the heating steel sheet (9), and the temperature acquisition module is electrically connected to the thermistor (6).

6. The functional defect detection device for a piezoelectric fingerprint module according to claim 5, characterized in that, The conveying assembly (11) is provided with a receiving tray (14) and a defective product tray (15).

7. The functional defect detection device for a piezoelectric fingerprint module according to claim 6, characterized in that, The conveying assembly (11) includes a bracket (1101), and two side plates (1102) are fixedly connected to the front and rear sides of the upper surface of the bracket (1101). A left roller (1103) and a right roller (1104) are rotatably connected between the two side plates (1102) through bearings. A conveyor belt (1106) is installed between the left roller (1103) and the right roller (1104). A motor (1107) is fixedly connected to the front of the side plate (1102), and the output end of the motor (1107) is fixedly connected to the left roller (1103).

8. The functional defect detection device for a piezoelectric fingerprint module according to claim 7, characterized in that, The support leg (1108) is fixedly connected to each of the four corners of the lower surface of the bracket (1101), and the bottom end of the support leg (1108) is fixedly connected to an anti-slip pad (1109), which is made of rubber.

9. The functional defect detection device for a piezoelectric fingerprint module according to claim 8, characterized in that, There are two conveyor belts (1106), which are installed in parallel on the front and rear sides of the left roller (1103) and the right roller (1104).

10. The functional defect detection device for a piezoelectric fingerprint module according to claim 9, characterized in that, The incoming material tray (14) and the defective product tray (15) are respectively set on two conveyor belts (1106).

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